Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689952 | Exhaust gas-purifying system for internal combustion engines | Hiroaki Kato, Yuichi Shimasaki, Akihisa Saito, Tetsu Teshirogi, Takuya Aoki +2 more | 1997-11-25 |
| 5634331 | Exhaust gas-purifying device for internal combustion engines | Takuya Aoki, Yuichi Shimasaki, Hiroaki Kato, Akihisa Saito, Toshikazu Oketani | 1997-06-03 |
| 5615552 | Secondary air pump control system for internal combustion engines | Yuichi Shimasaki, Hiroaki Kato | 1997-04-01 |
| 5600949 | Exhaust gas-purifying system for internal combustion engines | Hiroaki Kato, Yuichi Shimasaki, Akihisa Saito, Toshikazu Oketani, Seiji Hatcho +3 more | 1997-02-11 |